OG Hush is an artist based in Cambridge who specialises in 3D graff writing, but also works on photorealistic images and abstract work. You can get a feel for his work from his Facebook pages. This particular piece was sited near the North Street Green, and part of a long hoarding containing work from several artists.
His 3D writing is in the same general style as Zase and Loki, and really stands out from the crowd. The letters are reasonably clear to read, spelling HUSH, and in keeping with much of the rest of this wall has a Chinese feel about it. Great work.
OG Hush is not on the list of artists for the 2017 festival, so it might be some time before we see his work in Bristol again, which is a pity.